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Fibre > Fibre > Flashcards

Fibre Flashcards

1
Q

what does BFA stand for

A

bare fibre adaptor

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2
Q

what does SC stand for

A

subscriber connector

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3
Q

what does STPC stand for

A

straight tip physical contact

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4
Q

what does FCPC stand for

A

face contact/physical contact

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5
Q

what does LC stand for

A

Lucent connector

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6
Q

what does MTRJ stand for

A

mechanical transfer registered jack

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7
Q

what does APC stand for

A

angle physical connector

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8
Q

what is micro bending?

A

micro bends are caused when external pressure causes any amount of permanent damage to the core/cladding interface

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9
Q

what is macro bending?

A

caused by exceeding the bend radius of the cable

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10
Q

name 2 items/tools you would use to prepare a primary coated fibre for splicing

A

eye protection
rule or template
IPA
lint free wipes
3 step stripper
cleaver
cinbin

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11
Q

what is the main purpose of the primary coating

A

to protect the core and the cladding

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12
Q

why is spare fibre coiled inside a patch panel

A

to allow for re-termination possible

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13
Q

what is the purpose of the v-groove of a fusion splicer

A

to locate and hold the fibre

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14
Q

name 2 items/tools you would use to prepare a secondary coated fibre for splicing?

A

eye protection
rule or template
shears
3 step stripper
cleaning solutions/lint free wipes
cleaving tool
cinbin

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15
Q

the class of laser being used as a light source can be determined by what

A

the attached safety label

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16
Q

what are the 4 hazards

A

light sources
equipments
chemicals
glass

17
Q

name a type of photodiode used in fibre optics

A

P-I-N photo diode
avalanche photo diode
P-N photo diode

18
Q

what colour is used for OM1

A

Grey

19
Q

what colour is used for OM2

A

orange

20
Q

What colour is used to identify OM3/OM4

A

Aqua

21
Q

what colour is used for OM5

A

Lime

22
Q

what colour is used for OS1a/OS2

A

Yellow

23
Q

what colour is used to identify an APC connector

A

Green

24
Q

for what purpose is loose tube cable used?

A

external connection between buildings in horizontal plane

25
Q

advantages of singlemode fibre over muiltimode

A

lower attenuation over long distance
much larger bandwidth
wider repeater spacing
eliminates modal dispersion

26
Q

list 2 safe working practices when working with chemicals

A

do not inhale
do not ingest
do not smoke or use around a naked flame
ventilate working area well

27
Q

what is one of the drawbacks of continuity testing with VLS

A

only gives a visible indication
does not give a loss value
does not give a distance measurement

28
Q

which part of an all-glass fibre has a variable diameter

A

the core

29
Q

what must you check before commencing testing on fibre

A

ensure the fibre is not carrying live data
remove tx & rx
ensure you have the correct fibre test leads

30
Q

what are the two indexes of multi-mode fibre

A

stepped index
graded index

31
Q
A

Fibre (1 decks)

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